Highest Common Factor of 690, 378, 771 using Euclid's algorithm
Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
HCF Calculator using the Euclid Division Algorithm helps you to find the Highest common factor (HCF) easily for 690, 378, 771 i.e. 3 the largest integer that leaves a remainder zero for all numbers.
HCF of 690, 378, 771 is 3 the largest number which exactly divides all the numbers i.e. where the remainder is zero. Let us get into the working of this example.
Consider we have numbers 690, 378, 771 and we need to find the HCF of these numbers. To do so, we need to choose the largest integer first and then as per Euclid's Division Lemma a = bq + r where 0 ≤ r ≤ b
Highest common factor (HCF) of 690, 378, 771 is 3.
HCF(690, 378, 771) = 3
HCF of 690, 378, 771 using Euclid's algorithm
Highest common factor or Highest common divisor (hcd) can be calculated by Euclid's algotithm.
Highest common factor (HCF) of 690, 378, 771 is 3.
Highest Common Factor of 690,378,771 is 3
Step 1: Since 690 > 378, we apply the division lemma to 690 and 378, to get
690 = 378 x 1 + 312
Step 2: Since the reminder 378 ≠ 0, we apply division lemma to 312 and 378, to get
378 = 312 x 1 + 66
Step 3: We consider the new divisor 312 and the new remainder 66, and apply the division lemma to get
312 = 66 x 4 + 48
We consider the new divisor 66 and the new remainder 48,and apply the division lemma to get
66 = 48 x 1 + 18
We consider the new divisor 48 and the new remainder 18,and apply the division lemma to get
48 = 18 x 2 + 12
We consider the new divisor 18 and the new remainder 12,and apply the division lemma to get
18 = 12 x 1 + 6
We consider the new divisor 12 and the new remainder 6,and apply the division lemma to get
12 = 6 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 6, the HCF of 690 and 378 is 6
Notice that 6 = HCF(12,6) = HCF(18,12) = HCF(48,18) = HCF(66,48) = HCF(312,66) = HCF(378,312) = HCF(690,378) .
We can take hcf of as 1st numbers and next number as another number to apply in Euclidean lemma
Step 1: Since 771 > 6, we apply the division lemma to 771 and 6, to get
771 = 6 x 128 + 3
Step 2: Since the reminder 6 ≠ 0, we apply division lemma to 3 and 6, to get
6 = 3 x 2 + 0
The remainder has now become zero, so our procedure stops. Since the divisor at this stage is 3, the HCF of 6 and 771 is 3
Notice that 3 = HCF(6,3) = HCF(771,6) .
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Frequently Asked Questions on HCF of 690, 378, 771 using Euclid's Algorithm
1. What is the Euclid division algorithm?
Answer: Euclid's Division Algorithm is a technique to compute the Highest Common Factor (HCF) of given positive integers.
2. what is the HCF of 690, 378, 771?
Answer: HCF of 690, 378, 771 is 3 the largest number that divides all the numbers leaving a remainder zero.
3. How to find HCF of 690, 378, 771 using Euclid's Algorithm?
Answer: For arbitrary numbers 690, 378, 771 apply Euclid’s Division Lemma in succession until you obtain a remainder zero. HCF is the remainder in the last but one step.